Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
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The single biggest predictor of love is proximity.
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Kissing an infection-free partner is good for your teeth!
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Men who kiss their wives in the morning live five years longer than those who don't.
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Sea otters hold hands while sleeping so they don’t drift away from each other.
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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
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